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GOODWILL AND OTHER INTANGIBLES - Summary of changes in carrying value of goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 424,098	$ 418,522
Goodwill from acquisitions (a)	784	4,451
Foreign currency translation adjustments	1,266	1,125
Goodwill, ending balance	426,148	424,098
Consumer and Professional Products
Goodwill [Roll Forward]
Goodwill, beginning balance	232,845	227,269
Goodwill from acquisitions (a)	784	4,451
Foreign currency translation adjustments	1,266	1,125
Goodwill, ending balance	234,895	232,845
Home and Building Products
Goodwill [Roll Forward]
Goodwill, beginning balance	191,253	191,253
Goodwill from acquisitions (a)	0	0
Foreign currency translation adjustments	0	0
Goodwill, ending balance	$ 191,253	$ 191,253

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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-Publisher FASB
-Name Accounting Standards Codification
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X

- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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-Publisher FASB
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-SubTopic 20
-Section 50
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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-SubTopic 20
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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